CN1056786C

CN1056786C - Sheller

Info

Publication number: CN1056786C
Application number: CN96114501A
Authority: CN
Inventors: 佐竹觉; 福光弘幸; 山本正也
Original assignee: Statake Engineering Co Ltd
Current assignee: Satake Corp
Priority date: 1995-11-02
Filing date: 1996-11-01
Publication date: 2000-09-27
Anticipated expiration: 2016-11-01
Also published as: AU6809996A; CO4560417A1; JPH09122510A; TW344679B; KR100218856B1; EP0771590B1; MY115217A; ES2171588T3; AU689051B2; DE69618423T2; CN1156064A; KR970025714A; DE69618423D1; BR9605400A; MX9605279A; US5678477A; EP0771590A1

Abstract

In a husking apparatus comprising: a husking portion having a pair of husking rolls which are adjustable in clearance between them and rotated in opposite directions with different peripheral speeds to perform husking of paddy grain; and a supply portion disposed above the husking portion for supplying paddy grain to be husked to the husking portion, wherein the supply portion is so constructed as to supply paddy grain from the supply portion to the husking portion in the form of a layer in such a manner that a thickness of the layer of a flow of paddy grain becomes not greater than two grains at the husking portion, and the supply portion is so constructed as to supply paddy grain to the husking portion at a speed not less than a flowing-down speed corresponding to a minimum husking throughput desired of the husking apparatus so that husking is performed with a throughput not less than the minimum husking throughput, it is possible to enhance the husking throughput while minimizing the breakage of paddy grain.

Description

Hulling machine

The present invention relates to grain husking or peeling device, the structure of the hulling machine that is specifically related to comprises the roll-type shelling part of being made up of a pair of shelling roller, roll clearance between two rollers is adjustable, two rollers were done rotation in opposite directions with different peripheral speeds when the grain of rice was shelled, comprise that also one is positioned at the feeding part of shelling part top, the grain of rice that is used for shelling is sent into the shelling part, and this hulling machine is particularly useful for being subjected to impacting the shelling of grain of the long grained variety of easy fragmentation.Noun herein " long grained variety " grain refers to length and width (length of grain cross section long axis direction) than the grain that is not less than 2.

The grain of long grained variety is because it is shaped as elongated shape and is easy to fragmentation, so the percentage of damage than other various grain huskings of non-long grained variety wants high during the grain husking of long grained variety.The shelling amount (weight of the grain that can shell in the time per unit) that particularly improves hulling machine can cause that broken grain ratio in the hulled grain increases and the output that reduces complete grain.

Owing to this reason,, just can reduce the shelling amount of hulling machine in the shelling process more so want to increase the output of complete grain.

When hulling machine adopts 10 inches long rubber rollers to make the shelling roller, it is said that its shelling amount is 5 tons/hour to the grain husking of the kind outside the long grained variety (hereinafter also being referred to as " non-long grained variety ") time, promptly 5000 kilograms/hour.But if adopt common hulling machine under the condition identical with non-long grained variety grain long grained variety grain to be shelled, it is too high that the percentage of damage of grain can become.

Therefore when using common hulling machine, always adopt the feed rate (the feed amount of time per unit) or the treating capacity that reduce to shell usually to the long grained variety grain husking.

But when being used for grain after shelling and removing the grinding mill etc. of wheat bran and be used in combination, the reduction of hulling machine treating capacity causes comprising that this hulling machine milling unit overall process amount descends at hulling machine.On the other hand, for the overall process amount that makes milling unit remains on predeterminated level, must be to being provided with and equipping and carry out extra investment, such as adding hulling machine.

Disclose among the Japanese Patent Application Publication 61-68144: if when the paddy feed amount of pair roller type shelling part is too much in roll-type decorticator, paddy can be detained on a pair of shelling roller of shelling part and be easy to generate broken grain, and the grain of rice between the shelling roller by the time its axis be parallel to the roller surface, thereby be difficult to shelling satisfactorily.In addition, Japanese Patent Application Publication 61-68144 also announces, in order when improving husking yield, to reduce the generation of broken grain, the grain of rice is by between the through hole feeding shelling roller that extends in vertical direction, so the axis normal of the grain of rice is in (level) axle of shelling roller and be parallel to the direction that the grain of rice falls.

Japanese Patent Application Publication 61-174951 is open: if the feed amount (in the time per unit) of pair roller type shelling part is too much in roll-type decorticator; the grain of rice can be piled up on a pair of shelling roller of shelling part and rotate and the level whereabouts; broken so probably contact with the shelling roller surface of rotating; thereby be easy to produce broken grain; if and grain of rice feed amount (in the time per unit) is very few, the efficient that then shells (the paddy amount that can shell in the unit interval) descends.In addition, Japanese Patent Application Publication 61-174951 announces, when the gap turn narrow between a pair of shelling roller, husking yield (shelling reaches the percentage of the grain of rice of the level that requires in the middle of the grain of rice that passes through between the shelling roller) can improve, but the percentage of broken grain can increase, and when widening in the gap of shelling between roller, husking yield reduces, the percentage increase of hulled grain (shelling does not reach the grain of rice of the level that requires).In addition, Japanese Patent Application Publication 61-174951 announces: the length of the row's grain mouth (grain of rice inlet) that forms on the bottom surface as the feed hopper of grain of rice feed well equal the to shell width of the length of roller and row's grain mouthful equals the thickness (length on the short-axis direction) of the grain of rice, thus the grain of rice successively vertical drop to shelling roller length range feed.

Also disclose at the open 63-6050 of Japanese utility model application, Japanese Utility Model bulletin 31-17175 and 30-5826 etc.: for example, the grain of rice is be in line row or alignment in vertical direction, so that the grain of rice is shelled easily and improve husking yield.Open 63-6050 is open for Japanese utility model application: and then it is provided with a pair of feed roller below grain of rice inlet, dispose a pair of whole therebetween to plate, at the whole vertical channel that in the middle of plate, forms a plurality of parallel to each other and guiding grain of rice, and a pair of shelling roller is arranged below to feed roller at this.Japanese Utility Model bulletin 31-17175 discloses, between as the paddy feed hopper of paddy feed well and a pair of shelling roller, dispose a pair of endless apron, between this a pair of endless apron, be formed with a plurality of vertical parallel groove or passages that are used to guide the grain of rice.Japanese Utility Model bulletin 30-58 26 announces that this utility model adopts a kind of chute, have in a large number its vertically above upwardly extending guide groove, this chute is used for utilizing the air conductance to the roll-type part that shells the grain of rice charging from paddy feed hopper bottom.

In Japanese Patent Application Publication 50-57855, also disclose: the grain of rice arrangement of embarking on journey, i.e. alignment in vertical direction.Japanese Patent Application Publication 50-57855 announces a kind of chute that extends between paddy feed hopper and a pair of shelling roller that is arranged on, and has a large amount of vertical parallel grooves on the groove and is used to guide the grain of rice.

Point out in passing, in prior art, as Japanese Patent Application Publication 61-68144 and 61-174951, day disclosure utility model application open 63-6050, Japanese Patent Application Publication 50-57855 and Japanese Utility Model bulletin 30-5826, disclose: when vertical channel, passage or through hole were sent to roll-type shelling part, the part that forms groove, passage or through hole can produce vibration at the grain of rice.

Japan Patent 27-5407 discloses: the position of a pair of paddy feed roller and a pair of shelling roller is regulated by a linkage, make gap between a pair of shelling roller in vertical direction and as the gap alignment between a pair of paddy feed roller below the feed hopper of paddy feed well tight, irrelevant with the factors such as development of shelling roller wear intensity.Point out that in passing the peripheral speed that Japan Patent 27-5407 discloses the paddy feed roller is arranged to slower than the peripheral speed of shelling roller, purpose be prevent the grain of rice this to the gap between the shelling roller on or pile up above it.

Japanese Utility Model 47-22131 discloses: be used for the gap of grain of rice conductance between a pair of guide plate in the gap between a pair of shelling roller the closer to above-mentioned this to the shelling roller narrow more, and form a negative pressuren zone at this near to the shelling roller, thus the grain of rice reliably inspiration this in the gap between the shelling roller.

It is unexpected that the inventor of being find in experiment, when the grain of rice partly is sent to the shelling part by grain of rice feed, if the bed thickness of grain of rice stream is not more than two grain in the shelling part, what for to when shelling the shelling very high speed of part, also grain of rice percentage of damage can be reduced, in addition also like this when processing is easy to the grain of broken long grained variety.

The present invention develops the result of gained according to described new discovery just now for the part in addressing the above problem at least, and one object of the present invention is exactly that a kind of hulling machine that can reduce grain of rice percentage of damage when improving the shelling treating capacity will be provided.

For realizing above-mentioned purpose of the present invention; the invention provides a kind of hulling machine; comprise that a pair of shelling roller is arranged to mutually contiguous and rotates in opposite directions to carry out the shelling of the grain of rice with different peripheral speeds; the top that partly is located at the shelling roller with a feed is used for supplying with the grain of rice that will shell; described feed partly comprises a feed well that is used to store the grain of rice; a guiding chute; to be being used for of tilting the grain of rice on it slide this groove makes the grain of rice from gap between the described shelling roller is delivered in the lower end of groove; be used for the grain of rice that falls from feed well is directed to the upper end of guiding chute successively with a feeding part; the structure of described feeding part can make the grain of rice of supply become the form of one deck; it is characterized in that; the bed thickness that described guiding chute is set as speed that the shelling treating capacity described opening corresponding and described feeding part that is not less than the minimum that 500mm requires with described hulling machine at least with the speed of fall that quickens the grain of rice from the dropping distance in the gap of the described shelling roller of exporting to of described feeding part is adjustable to the grain of rice that control flows through to be become at the described grain of rice stream of the gap location of described shelling roller is not more than two grain.

Said herein minimum shelling treating capacity refers to common hulling machine desired treating capacity when the non-long grained variety grain of rice is shelled.

When paddy was a kind of long grain rice, the speed that flows down that the hulling machine preferred design becomes the grain of rice was not lower than 3 meter per seconds when the grain of rice arrives gap between a pair of shelling roller.

In hulling machine, be used for to accomplish to make the grain of rice that partly is sent to the shelling part by feed to form a thin and wide laminar flow layer design that the grain of rice to be shelled is sent to the feed part of shelling part according to the present invention structure, its thickness is not more than two grain when arriving a pair of shelling roller of shelling part, thereby can alleviate for because resilient roller, as rubber rollers, between the worry of the grain of rice fragmentation that causes of pressure.Thereby also can reduce paddy broken load in shelling part is disturbed, that I guess paddy be a kind of long grain rice.In addition, in hulling machine of the present invention, the structure of feed part and design can guarantee to flow down speed (in fact approximating 3 meter per seconds under the situation of long grained variety paddy) accordingly to the minimum desirable shelling treating capacity that the shelling part carries the speed of the grain of rice to be not less than with hulling machine, so that the shelling treating capacity is not less than minimum shelling treating capacity, even and thereby the bed thickness of grain of rice stream be reduced to and be not more than two grain of rice, the treating capacity of shelling also can remain on the predeterminated level.

More particularly, in the hulling machine of this invention, because the increase of the speed that flows down of grain of rice stream or feeding speed is corresponding with the decrease of the bed thickness of grain of rice stream at least, the shelling treating capacity of hulling machine can not reduce over all, and, can reduce the generation of broken grain between the resilient roller because the bed thickness of grain of rice stream is thinner.Point out in passing, the inventor by experiment or test found " when the grain of rice partly is sent to shelling during part by feed; if the bed thickness of grain of rice stream is not more than two grain in the shelling part; what for to when the shelling very high speed of shelling part; also grain of rice percentage of damage can be reduced, even also like this when processing is easy to the grain of broken long grained variety ".The inventor is according to the growing amount of resulting treating capacity and broken grain or the upper limit that the relation between the percentage (hereinafter will introduce in detail with reference to figure 5) has drawn bed thickness by experiment, and finished the present invention according to this new discovery.

In the present invention, if be determined by experiment from the distance of fall or the vertical range in the gap between the shelling roller that exports to shelling part of feed well and be not more than 500mm, the speed of its acquisition was not more than 3 meter per seconds when then the grain of rice that glides at the effect lower edge of gravity guiding chute arrived interstitial area between a pair of shelling roller.Therefore, in this case, when the mode that adopts this bed thickness that makes the grain of rice stream of being dished out by guiding chute lower end to be not more than two grain is guided the grain of rice this into to the shelling roller by the guiding chute, the grain of rice can obtain to be not less than the desired speed that flows down of hulling machine, and is also passable even the grain of rice is a kind of long grained variety.Owing to this reason, to have a pair of effective shelling length be in 10 inches the hulling machine of shelling roller disposing the shelling roller segment, for example, can reach 5 tons/hour treating capacity and can reduce percentage of damage.

Dispose a guiding mechanism that is used to adjust guiding chute inclination angle in the hulling machine of constructing according to a preferred embodiment of the invention, the position of chute lower end adapts to because the change of the interstitial site between the shelling roller that the roller wearing and tearing that shell cause so that regulate or adjust.

Aforementioned and other purposes, characteristics and advantage of the present invention, with reference to the accompanying drawings according to preferred embodiment, below will be more clear.

Fig. 1 be according to a first advantageous embodiment of the invention hulling machine or the vertical cross section figure of skinning machine;

Figure 1A is that the guiding chute of hulling machine of Fig. 1 is along the cross-sectional view of IA-IA line;

Fig. 2 is the schematic diagram of the drive system of the hulling machine among Fig. 1;

Fig. 3 is the vertical cross section figure of hulling machine according to a second embodiment of the present invention;

Fig. 4 is the schematic diagram of the drive system of the hulling machine among Fig. 3;

Fig. 5 is the curve map of expression percentage of damage and the thick relation of long grained variety grain fluid layer;

Fig. 6 is the signal vertical cross section figure that is used to adjust the device of guiding the chute inclination angle.

Be introduced below with reference to Fig. 1,1A and 2 pairs of hulling machine or skinning machines according to a first advantageous embodiment of the invention.This hulling machine can be with 5 tons/hour treating capacity to the operation that shells of the grain of long grain rice.

Fig. 1 is total sectional drawing of hulling machine 1.Bottom at the casing 4 of hulling machine 1 is equipped with a pair of rotating

rubber rollers

2,3, is used for serving as a pair of shelling

roller.Rubber rollers

2,3 is a resilient roller, and the axially effectively shelling length of each roller is, such as, 10 inches.Roll shaft 2b is rotated at the middle part of

rubber rollers

2,3, and the distance between 3b is adjustable, regulates such as can utilize any suitable mechanism's (not shown) commonly used to use shelling roller governor motion as.By the distance between the roll shaft 2b of the roll shaft 3b of rubber rollers 3 and rubber rollers 2 is transferred size or size near or that the gap (not shown) between

rubber rollers

2,3 circumferential surfaces far can be regulated in accent moving on A or the B direction.Roll shaft 2b is at A, position-adjustable or move on the B direction, roll shaft 3b then can not, perhaps

roll shaft

2b, 3b is at A, the position is adjustable or removable on the B direction.As shown in Figure 2, the roll shaft 2b that pulley 22 is fixed on rubber rollers 2 goes up and is coaxial with rubber rollers 2, and diameter is that roll shaft 3b that little pulley 3a is fixed in rubber rollers 3 goes up and coaxial with rubber rollers 3 than pulley 2a,

pulley

2a, 3a is by

belt

29,30 with different angular speed or rotating speed (commentaries on classics/unit interval) along direction C in opposite directions, D rotates, and is as mentioned below.Therefore, the

rubber rollers

2,3 with same diameter forms shelling roller segments or shelling rubber roll apparatus 26 as the shelling parts, and

rubber rollers

2,3 is along direction C in opposite directions in this shelling part, and D rotates with different circumferential speed and finishing the shelling operation.

Before introducing hulling machine 1 detail structure, introduce the result of the test of institute of the present invention foundation here earlier, i.e. the resulting experimental result of inventor.

The resulting result of the test of the inventor shown in Fig. 5, ordinate is when a pair of shelling roller 2 of the grain of rice in shelling part 26, flow through the bed thickness of the grain stream of duration grain rice varieties between 3, its representation unit is the grain number, and abscissa is the ratio of growing the broken grain that is comprised in the grain rice of being discharged by shelling part 26, and representation unit is a percentage.Point out in passing, also carried out similar experiment to obtain the data of husking yield or shelling percentage.

Can clearly be seen that by the curve among Fig. 5 when the bed thickness of long grain grain of rice stream was not less than four grain, the percentage of broken grain (ratio) was greater than 5%, thereby normal, i.e. non-fragmentation, the output of grain descends greatly.Inventor imagination or suppose that its reason is when bed thickness is big, long grain paddy kernel, such as, can be between rubber rollers 2,3-grain pressures-grain ground cross stacking and be subjected to the pressure and the fragmentation of

rubber rollers

2,3 owing to the effect of the power of

rubber rollers

2,3 speed differences generation.On the other hand, when the layer thickness of long grain grain of rice stream connect two grain thickness for a short time, the percentage of broken grain (ratio) dropped sharply to less than 1%.The present inventor has proved conclusively by experiment, no matter the flow velocity of long grain paddy is much, the characteristic curve of Fig. 5 is all set up.

Also confirmed by experiment even the paddy of other kinds of non-long grained variety also demonstrates substantially the same characteristic (though with the situation of long grain paddy compare broken grain percentage so unobvious with the thick variation of grain fluid layer).As a result, the present invention shows that its superiority is the most obvious in being applied to long grained variety paddy, but even the paddy of other kinds beyond the long grained variety, promptly non-long grained variety, situation under also be effective.

In the present invention who stands on this result of the test, feeding device is adjusted to the treating capacity decline that can increase the flowing down speed of paddy grain stream when making bed thickness be not more than two grain and not cause hulling machine.

Back with reference to figure 1,,, dispose a feed well 6 of storing paddy grain promptly at the topmost of upper casing 5 on the top of casing 4.The bottom of this feed well 6 roughly is funnel-form.Lower end at this feed well 6 forms an opening 6a, and paddy grain is discharged or feed by this opening 6a.

And then the bottom of the opening 6a of feed well 6 disposes a flashboard 9, the base portion of this plate cooperates with screw rod 8 by screw thread, and 8 of screw rods are fixed on the output shaft of the miniature motor 7 that is installed on the upper casing 5 and can are promoted to move on E1 and E2 direction and the opening 6a of feed well 6 is opened and closed by motor 7.Miniature motor 7, screw rod 8 and flashboard 9 are worked in coordination and are formed feed well 6 and open not busy device 50.The headstock gear 50 of feed well 6 also can be any other structure, as long as it can regulate the size of charging aperture 6a.

Below flashboard 9, dispose inclined guide plate 10, feed roller below guide plate 10 or feeding roller 11, a plurality of projections are arranged on its side face and ceaselessly rotate so that the grain of rice is carried downwards, also have an adjustable plate 13 that can on direction G1 and G2, rotate around bolster 12 along direction F.The bottom of this adjustable plate 13, promptly the part than support shaft supports is low part, supports by the screw rod 14 at the screw of the inside of upper casing 5 hitch by one.Screw rod 14 can be at direction E2, E1 is last move so that adjustable plate 13 around bolster 12 at direction G1, the last rotation of G2, thus can make the gap H between adjustable plate 13 and the feeding roller 11 suitably be regulated or set.Difference in height (drop) is not less than 500mm between the position of gap H and the interstitial site between the rubber rollers 2,3.Feeding roller 11, adjustable plate 13 and screw rod 14 are worked in coordination and are formed a feeding part or feed arrangement 51 so that carry out grain of rice feed operation with desired fixed flow rate.Feeding part 51 also can be any other structure, as long as can will be sent to shelling part 26 by the grain of rice that feed well 6 is sent with adjustable flow velocity.

Below feeding roller 11, dispose a guiding chute 16, transmit the groove 16a (seeing Figure 1A) that the surface is provided with longitudinal extension thereon, so that will be sent to rubber rollers device 26 by the grain of rice of gap H as the shelling part.Label 15 is represented guide plate.Guiding chute 16 is fixed on the truss 17, and truss 17 is installed on the upper casing 5 and can be at direction J1, and J2 is last around bolster 18 rotations.The bottom of truss 17, promptly the part than support shaft supports is low part, supports by the screw rod 19 at the screw of upper casing 5 inner hitch by one.Screw rod 19 can be at direction K1, and K2 is last to be moved, thus can make truss 17 around bolster 18 at direction J1, the last rotation of J2, thus the gradient of guiding chute 16 is regulated.The composition of guiding device 52 comprises guide plate 15, guiding chute 16, truss 17, turning cylinder 18 and screw rod 19.The adjusting of the gradient of guiding chute 16 can utilize any other device to carry out, as long as the gradient of guiding chute 16 can be regulated.

As mentioned above, the composition of feeding device 27 comprises feed well 6, headstock gear 50, feed arrangement 51 and guiding device 52.

Fig. 2 illustrates the thin portion structure of the drive system of shelling 1.Illustrating as can be known with reference to the drive system of figure 2, the driving force of driver motor 24 is sent to shelling part or rubber rollers device 26 by belt 29 and intermediary's pulley 32, this road is to rely on belt 30 to transmit, another road then is to rely on belt 31 to be sent to pulley 11a, and the conveying roller 11 of pulley 11a and feeding device 27 is

coaxial.Label

33 and 34 is represented straining pulley.

Its shelling treating capacity can reach and be not less than 5 tons/hour when hulling machine 1 adopted this structure.

In the hulling machine 1 of above-mentioned this structure, when main motor 24 is driven and when rotating, the

rubber rollers

2,3 of shelling part 26 and the conveying roller 11 of feeding part 51 are driven and rotate on predetermined direction.On the other hand, when being driven, miniature motor 7 makes flashboard 9 open duration grain paddy kernel to begin to fall and be sent to conveying roller 11 by guide plate 10 from the opening 6a of feed well 6, begin then to pass through the downward dispatch of gap H with a fixed flow rate, its flow velocity is determined by the size of the gap H between conveying roller 11 and the adjustable plate 13 or the rotating speed of size and conveying roller 11.Withdrawal rate or feed amount (in the time per unit) will be regulated so that the bed thickness of long grain paddy kernel stream locates to be no more than two grain between

rubber rollers

2,3 when the speed that flows down of the grain of rice is as mentioned below.

The long grain paddy kernel of discharging is transported to guiding chute 16 by guide plate 15 and glides thereon by whereabouts or the vertical range of a 500mm, gravitate in the time of downslide and quickening.The result is when the grain of rice arrives between the

rubber rollers

2,3 at last, and it flows down speed V and is not less than 3 meter per seconds.Therefore, two grain being said above just becoming of the bed thickness of long grain paddy kernel stream are thick.So just satisfied in the practice no broken grain produce to bed thickness with flow down the requirement of speed, thereby the shelling treating capacity that just can guarantee to utilize 10 inches rubber rollers to obtain being scheduled to.

As mentioned above, in hulling machine 1 according to a preferred embodiment of the invention, the bed thickness of long on the one hand grain paddy kernel stream is thinner than the bed thickness that is adopted in recent years, and it flows down speed raising reducing with the compensation bed thickness on the other hand.Therefore can guarantee to shell processing both can reach the predetermined process amount that the size (effective length) according to rubber rollers is estimated, can reduce the generation of broken grain in shelling is handled again.If, also needn't be only add hulling machine in order to add section chief's grain rice etc. even unite use with paddy grinding mill or production line.In addition, can design the treating capacity of entire equipment according to the predetermined process amount of estimating by the size (effective length) of rubber roll.

The periphery wearing and tearing can take place in

rubber rollers

2,3 gradually that inevitably form shelling part 26 in the shelling operation.If have wearing and tearing in the

rubber rollers

2,3 at least, for the periphery that keeps rubber rollers 3 and the periphery of rubber rollers 2 are in predetermined relative positions, rubber rollers 3 will move to rubber rollers 2 on direction A, for example, and shown in the dotted line among Fig. 6.Because rubber rollers 3 is mobile like this, the contact portion between

rubber rollers

2,3 moves on to L2 by L1, this contact portion with in rubber rollers 2, the gap that forms between 3 is corresponding, and this gap is subjected to the resilient force of

rubber rollers

2,3 and is used for squeezing when being subjected to elastic compression and rolls the grain of rice at the grain of rice.Thereby the lower end 16a of guiding chute 16 originally is position, the contact zone L1 that is adjusted in over against between the

picture rubber roll

2,3, should be adjusted to now in the face of new position L2.In example shown in Figure 6, the adjusting of guiding chute 16 gradients can be carried out position adjustments with respect to the contact zone and finished automatically by lower end 16a.

Promptly in the example of Fig. 6, be provided with to regulate and adorn 41, screw rod 39 wherein is fixed on the motor output shaft 38 that is installed on the upper casing 5, and is supported on the casing 5 with the adjusting rod 40 of screw rod 39 screw-threaded engagement and can be along K1, and the K2 direction is slided.

In this case, rubber rollers 2, the position L1 of 3 contact zone or contact point is detected by the sensor (not shown), the gradient that adjusting device 41 is regulated guiding chute 16 according to the position signalling of sensor, thus just can continued operation under the condition that keeps raising shelling treating capacity.Sensor also can save need not, such as the gradient that can regulate chutes 16 by adjusting device 41 26 running times of part according to shelling.

Below with reference to Fig. 3 and Fig. 4 the hulling machine or the skinning machine of second preferred embodiment of the present invention are introduced.The hulling machine 25 of second embodiment also dispose 10 inches the shelling rubber rollers and with the hulling machine 1 the same treating capacity that can reach 5 tons/hour of first embodiment.

Fig. 3 illustrates total sectional drawing of the hulling machine 25 of second embodiment, in it and same or analogous element of hulling machine or the parts of first embodiment among Fig. 1 adopt same label to represent.Similar with hulling machine 1, a pair of

rotatable rubber rollers

2,3 is installed as the shelling rollers in the bottom of the casing 4 of hulling machine 25.Roll shaft 2b is rotated at middle part as the

rubber rollers

2,3 of resilient roller, and the distance between the 3b is adjustable.As shown in Figure 4, pulley 2a and rubber rollers 2 are coaxial, and the diameter of pulley 3a is little and coaxial with rubber rollers 3 than the diameter of 2a.By

belt

29,30

pulley

2a, 3a, rotates on the D at direction C in opposite directions with different angular speed.Therefore, the identical rubber rollers of

diameter

2,3 constitutes as the shelling roller segment of hulling device or shelling rubber rollers device 26, and along opposite direction C, D rotates and finishes the shelling

operation rubber rollers

2,3 wherein with different angular speed or peripheral speed.

On the top of casing 4,, dispose a feed well 6 of storing the grain of rice also promptly in the uppermost part of upper casing 5.The lower end of feed well 6 is funnel-form.An opening 6a is arranged in the lower end of feed well 6, discharge or send the grain of rice by this opening 6a.

Below the opening 6a of feed well 6, and then dispose a flashboard 9, the base portion of this plate cooperates with screw rod 8 by screw thread, and 8 of screw rods are fixed on the output shaft of the miniature motor 7 that is installed on the upper casing 5 and can are promoted to move on E1 and E2 direction and the opening 6a of feed well 6 is opened and closed by motor.Miniature motor 7, screw rod 8 and flashboard 9 are worked in coordination and are formed feed well 6 headstock gears 50.

Below flashboard 9, dispose inclined guide plate 10, feed roller below guide plate 10 or feeding roller 11, a plurality of projections are arranged on its side face and ceaselessly rotate so that the grain of rice is carried downwards, also have an adjustable plate 13 that can on direction G1 and G2, rotate around bolster 12 along direction F.Support by the screw rod 14 at the screw of the inside of upper casing 5 hitch by one the bottom of this adjustable plate 13.Screw rod 14 can be at direction E2, E1 is last move so that adjustable plate 13 around bolster 12 at direction G1, the last rotation of G2, thus can make the gap H adjusting between adjustable plate 13 and the feeding roller 11 or be set at suitable size or width.Feeding roller 11, adjustable plate 13 and screw rod 14 are worked in coordination and are formed a feeding part or feed arrangement 51 so that carry out grain of rice feed operation with the fixed flow rate of being regulated.

Dispose a guide plate 15 and an accelerator 28 below feeding roller, be used for and will deliver to as shelling rubber rollers device 26 partly by gap H and by the rice material of guide plate 15 guidings, speed is not less than predetermined level.The composition of accelerator 28 comprises a pair of

transfer roller

20,21, and

transfer roller

20,21 rotatably supports also can identical speed rotate on upper casing 5 in opposite

directions.Transfer roller

20,21 is clamped the grain of rice that enters from the top and with high speed the grain of rice is dished out downwards after very short time, thereby makes the grain of rice obtain quickening.

Among the grain of rice introducing shelling part 26 through accelerator 28 acceleration, shelling part 26 is made up of a pair of

shelling roller

2,3, and don't fail to utilize a pair of guide plate 22,23 when introducing, this is to guide plate 22,23 are fixed on the casing 4, and gap therebetween is narrow more the closer to shelling part 26.Also can be arranged to guide plate 22,23 by the guiding device 55 of guide plate 22,23 compositions is that the position is adjustable, thereby can change the size in gap between the two.

In the present embodiment, the composition of feeding device 56 comprises feed well 6, headstock gear 50, feed arrangement 51, accelerator 28 and guiding device 55.

Fig. 4 illustrates the thin portion structure of the drive system of hulling machine 25.The driving force that illustrates driver motor 24 as can be known with reference to the drive system of figure 4 is by belt 29 and intermediary's pulley 32 and utilize belt 30 to be sent to shelling part or rubber rollers device 26.Hulling machine 25 also has a drive motor 35 in addition, the driving force of this drive motor 35 is sent to the high

speed transfer roller

20 and 21 of conveying roller 11 and accelerator 28 respectively by belt 37, during transmission respectively by with the coaxial pulley 11a of delivery wheel 11 and with coaxial pulley 20a and the 21a of high speed

transfer roller.Label

33,36 is represented straining pulley.

In the hulling machine 25 of this structure, when drive

motor

24,35 starts and when rotating, the high

speed transfer roller

20,21 of the

rubber rollers

2,3 of hulling machine 26, the conveying roller 11 of feeding part 51 and accelerator 28 is driven and rotates on predetermined direction.When miniature motor 7 begins to make flashboard 9 to open, long grain paddy kernel begins to be sent to conveying roller 11 from the opening 6a whereabouts of feed well 6 and by guide plate 10, send downwards or discharge with fixing flow velocity by gap H then, this flow velocity is determined by the size of the gap H between delivery wheel 11 and the adjustable plate 13 or the rotating speed of size and delivery wheel 11.Withdrawal rate or feed amount (time per unit in) will be regulated so that locate to be no more than two grain at the bed thickness of the speed that the flows down duration grain as mentioned below paddy kernel stream of the grain of rice between

rubber rollers

2,3.

The long grain paddy kernel of discharging is sent between a pair of constant

speed transfer roller

20,21 that constitutes accelerator 28 by guide plate 15, and is clamped with high speed rotating and to dish out downwards at a high speed by this a pair of transfer roller 20,21.28 acceleration of process accelerator and a long grain paddy kernel of being dished out downwards must pass through a pair of guide plate 22,23 are incorporated into a pair of shelling roller 2 of shelling part 26, between 3, guide plate 22,23 be fixed on the casing 4 in pairs and the gap between two plates narrow more the closer to shelling part 26, and that the bed thickness of long grain paddy kernel stream should be adjusted to two grain is thick.

When the grain of rice arrived between the

shelling roller

2,3 at last, the speed that the flows down V of the grain of rice was not less than 3 meter, seconds.As a result, to become aforesaid two grain thick for the bed thickness of long grain paddy kernel stream.So just satisfied and reduced broken grain in the practice and produce bed thickness and flow down the requirement of speed, thereby the shelling treating capacity that just can guarantee in hulling machine 25, to utilize 10 inches rubber rollers to obtain being scheduled to.

In the present embodiment, the predetermined speed that flows down mainly or basically depends on accelerator 28, and predetermined bed thickness mainly or basically depends on accelerator 28 and guiding device 55.

As mentioned above, in hulling machine 25 according to a second, preferred embodiment of the present invention, the bed thickness of long on the one hand grain paddy kernel stream is thinner than the bed thickness that is adopted in recent years, it flows down speed raising reducing with the compensation bed thickness on the other hand, therefore can guarantee to shell processing both can reach the predetermined process amount that the size (effective length) according to rubber rollers is estimated, can reduce the generation of broken grain in shelling is handled again.

Claims

1. a hulling machine (1); comprise a pair of shelling roller (2; 3) be arranged to be close to mutually and rotate in opposite directions to carry out the shelling of the grain of rice with different peripheral speeds; be located at shelling roller (2 with a feed part (27); 3) top is used for supplying with the grain of rice that will shell; described feed part (27) comprises a feed well (6) that is used to store the grain of rice; a guiding chute (16); this groove (16) is that being used for of tilting makes the slip of the grain of rice on it grain of rice deliver to described shelling roller (2 from the lower end of groove; 3) in the gap between; be used for the grain of rice that falls from feed well (6) is directed to the upper end of guiding chute (16) successively with a feeding part (51); the structure of described feeding part (51) can make the grain of rice of supply become the form of one deck; it is characterized in that

Described guiding chute (16) is set as outlet (H) from described feeding part (51) to described shelling roller (2, the dropping distance in gap 3) be not less than the shelling treating capacity of the minimum that 500mm requires with described hulling machine at least with the speed of fall that quickens the grain of rice corresponding and

The bed thickness that the described opening (H) of described feeding part (51) is adjustable to the speed of controlling the grain of rice that flows through to be become at the described grain of rice stream of the gap location of described shelling roller (2,3) is not more than two grain.

2. according to the hulling machine (1) of claim 1, it is characterized in that described guiding chute (16) is set as when the described grain of rice arrives the gap of described hulling machine (2,3), is accelerated to 3m/sec at least.

3. according to the hulling machine of claim 1 or 2, it is characterized in that also comprising an adjusting device (17-19), be used for regulating the gradient of guiding chute (16) so that according to described shelling roller (2,3) position of the lower end of described chute (16) is regulated in the change that the interstitial site between takes place owing to the wearing and tearing of described shelling roller (2,3).

4. according to the hulling machine of claim 1 or 2, it is characterized in that the groove (16a) that the transmission surface is provided with longitudinal extension of going up of described guiding chute (16).